Manual
Table Of Contents
- Contents
- Figures
- Warranty
- Safety Information
- 1 RB-UL1 Single, RB-UL2 Dual & RB-UL4 Quad Stereo Unbalanced To Balanced Converters
- 2 RB-LU4 Quad Stereo Balanced To Unbalanced Converter
- 3 RB-BL2 Single & RB-BL4 Dual Bi-Directional Matching Converter
- 4 RB-PA2 Dual Stereo RIAA Phono Amplifier
- 5 RB-LI2 Stereo Line Isolation Unit
- 6 RB-PLI6 6 Way Mono Passive Line Isolation Unit
- 7 RB-DA6 & RB-DA6G 6 Way Stereo Distribution Amplifier
- 8 RB-DA4x5 4 Input 4 x 5 Output Distribution Amplifier/Mixer
- 9 RB-DDA6A 6 Way Stereo AES/EBU Digital Distribution Amplifier and RB-DDA6S 6 Way Stereo S/PDIF Dig
- 10 RB-DDA6W 6 Way Word Clock Distribution Amplifier
- 11 RB-HD1 Stereo Headphone Amplifier & RB-HD2 Dual Headphone Amplifier
- 12 RB-HD6 6 Way Headphone Distribution Amplifier
- 13 RB-DHD6 Digital 6 Way Headphone Distribution Amplifier
- 14 Connectors & Cabling
- Glossary
Redbox User Handbook No 2
13
MATCHING CONVERTERS - RB-PA2
4 RB-PA2 Dual Stereo RIAA Phono Amplier
Introduction
Fig 4-1: RB-PA2 Front Panel.
The RB-PA2 is a dual stereo RIAA equalised phono amplier. This record player preamp
amplies the small signal from your pick up cartridge (either moving magnet or high output
moving coil magnetic) and provides the necessary RIAA equalisation required for vinyl
records, to match it to a line input of your mixer, or amplier. It uses a clean RIAA response
making it ideal for use with broadcast turntables and DJ decks and where vinyl records are
being archived to CD for high quality transfers, or for converting albums to mp3.
It operates with phono cartridges with a nominal output of 1mV to 25mV and has been
specically tested to work with the Technics SL-1200™ and 1210™ range of turntables.
Quality high specication components have been used together with low noise, fast acting
operational ampliers to produce a superbly transparent signal path. Additionally, the
RB-PA2 runs without a rumble lter to produce a powerful bass response.
The RB-PA2 is a dual stereo unit to interface up to two turntables. The inputs are phono
connectors with Neutrik XLR connectors for the balanced outputs, which may be wired
unbalanced if required. Output gain is individually adjustable for left and right channels in
the range 35dB to 65dB by using pre-set potentiometers. Frequency response is held
within 0.5dB of the RIAA curve and noise is typically better than -84dB RMS A weighted at
40dB gain.
System Block Diagram
Fig 4-2: RB-PA2 Block Diagram For a Single Stereo Channel.
MATCHING CONVERTERS
4
RIAA
Gain
Phono
RIAA
Gain
Left Output
Professional/Balanced
Right Output
Professional/Balanced
Left Input
Phono
Right Input
Phono